diff options
| author | aarne <aarne@cs.chalmers.se> | 2008-06-25 16:54:35 +0000 |
|---|---|---|
| committer | aarne <aarne@cs.chalmers.se> | 2008-06-25 16:54:35 +0000 |
| commit | e9e80fc389365e24d4300d7d5390c7d833a96c50 (patch) | |
| tree | f0b58473adaa670bd8fc52ada419d8cad470ee03 /src-3.0/GF/Text | |
| parent | b96b36f43de3e2f8b58d5f539daa6f6d47f25870 (diff) | |
changed names of resource-1.3; added a note on homepage on release
Diffstat (limited to 'src-3.0/GF/Text')
| -rw-r--r-- | src-3.0/GF/Text/Lexing.hs | 115 | ||||
| -rw-r--r-- | src-3.0/GF/Text/Transliterations.hs | 97 | ||||
| -rw-r--r-- | src-3.0/GF/Text/UTF8.hs | 48 |
3 files changed, 0 insertions, 260 deletions
diff --git a/src-3.0/GF/Text/Lexing.hs b/src-3.0/GF/Text/Lexing.hs deleted file mode 100644 index 2c6b417b8..000000000 --- a/src-3.0/GF/Text/Lexing.hs +++ /dev/null @@ -1,115 +0,0 @@ -module GF.Text.Lexing (stringOp) where - -import GF.Text.Transliterations -import GF.Text.UTF8 - -import Data.Char -import Data.List (intersperse) - --- lexers and unlexers - they work on space-separated word strings - -stringOp :: String -> Maybe (String -> String) -stringOp name = case name of - "chars" -> Just $ appLexer (filter (not . all isSpace) . map return) - "lextext" -> Just $ appLexer lexText - "lexcode" -> Just $ appLexer lexText - "lexmixed" -> Just $ appLexer lexMixed - "words" -> Just $ appLexer words - "bind" -> Just $ appUnlexer bindTok - "uncars" -> Just $ appUnlexer concat - "unlextext" -> Just $ appUnlexer unlexText - "unlexcode" -> Just $ appUnlexer unlexCode - "unlexmixed" -> Just $ appUnlexer unlexMixed - "unwords" -> Just $ appUnlexer unwords - "to_html" -> Just wrapHTML - "to_utf8" -> Just encodeUTF8 - "from_utf8" -> Just decodeUTF8 - "to_cp1251" -> Just encodeCP1251 - "from_cp1251" -> Just decodeCP1251 - _ -> transliterate name - -appLexer :: (String -> [String]) -> String -> String -appLexer f = unwords . filter (not . null) . f - -appUnlexer :: ([String] -> String) -> String -> String -appUnlexer f = unlines . map (f . words) . lines - -wrapHTML :: String -> String -wrapHTML = unlines . tag . intersperse "<br>" . lines where - tag ss = "<html>":"<body>" : ss ++ ["</body>","</html>"] - -lexText :: String -> [String] -lexText s = case s of - c:cs | isPunct c -> [c] : lexText cs - c:cs | isSpace c -> lexText cs - _:_ -> let (w,cs) = break (\x -> isSpace x || isPunct x) s in w : lexText cs - _ -> [s] - --- | Haskell lexer, usable for much code -lexCode :: String -> [String] -lexCode ss = case lex ss of - [(w@(_:_),ws)] -> w : lexCode ws - _ -> [] - --- | LaTeX style lexer, with "math" environment using Code between $...$ -lexMixed :: String -> [String] -lexMixed = concat . alternate False where - alternate env s = case s of - _:_ -> case break (=='$') s of - (t,[]) -> lex env t : [] - (t,c:m) -> lex env t : [[c]] : alternate (not env) m - _ -> [] - lex env = if env then lexCode else lexText - -bindTok :: [String] -> String -bindTok ws = case ws of - w:"&+":ws2 -> w ++ bindTok ws2 - w:[] -> w - w:ws2 -> w ++ " " ++ bindTok ws2 - [] -> "" - -unlexText :: [String] -> String -unlexText s = case s of - w:[] -> w - w:[c]:[] | isPunct c -> w ++ [c] - w:[c]:cs | isPunct c -> w ++ [c] ++ " " ++ unlexText cs - w:ws -> w ++ " " ++ unlexText ws - _ -> [] - -unlexCode :: [String] -> String -unlexCode s = case s of - w:[] -> w - [c]:cs | isParen c -> [c] ++ unlexCode cs - w:cs@([c]:_) | isClosing c -> w ++ unlexCode cs - w:ws -> w ++ " " ++ unlexCode ws - _ -> [] - - -unlexMixed :: [String] -> String -unlexMixed = concat . alternate False where - alternate env s = case s of - _:_ -> case break (=="$") s of - (t,[]) -> unlex env t : [] - (t,c:m) -> unlex env t : sep env c : alternate (not env) m - _ -> [] - unlex env = if env then unlexCode else unlexText - sep env c = if env then c ++ " " else " " ++ c - -isPunct = flip elem ".?!,:;" -isParen = flip elem "()[]{}" -isClosing = flip elem ")]}" - - --- might be in a file of its own: Windows Cyrillic, used in Bulgarian resource - -decodeCP1251 = map convert where - convert c - | c >= '\192' && c <= '\255' = chr (ord c + 848) - | otherwise = c - -encodeCP1251 = map convert where - convert c - | oc >= 1040 && oc <= 1103 = chr (oc - 848) - | otherwise = c - where oc = ord c - diff --git a/src-3.0/GF/Text/Transliterations.hs b/src-3.0/GF/Text/Transliterations.hs deleted file mode 100644 index 30c098df8..000000000 --- a/src-3.0/GF/Text/Transliterations.hs +++ /dev/null @@ -1,97 +0,0 @@ -module GF.Text.Transliterations (transliterate,transliteration,characterTable) where - -import GF.Text.UTF8 - -import Data.Char -import qualified Data.Map as Map - --- transliterations between ASCII and a Unicode character set - --- current transliterations: devanagari, thai - --- to add a new one: define the Unicode range and the corresponding ASCII strings, --- which may be one or two characters long - --- conventions to be followed: --- each character is either [letter] or [letter+nonletter] --- when using a sparse range of unicodes, mark missing codes as "-" in transliterations --- characters can be invisible: ignored in translation to unicode - -transliterate :: String -> Maybe (String -> String) -transliterate s = case s of - 'f':'r':'o':'m':'_':t -> fmap appTransFromUnicode $ transliteration t - 't':'o':'_':t -> fmap appTransToUnicode $ transliteration t - _ -> Nothing - -transliteration :: String -> Maybe Transliteration -transliteration s = case s of - "devanagari" -> Just transDevanagari - "thai" -> Just transThai - _ -> Nothing - -characterTable :: Transliteration -> String -characterTable = unlines . map prOne . Map.assocs . trans_from_unicode where - prOne (i,s) = unwords ["|", show i, "|", encodeUTF8 [toEnum i], "|", s, "|"] - -data Transliteration = Trans { - trans_to_unicode :: Map.Map String Int, - trans_from_unicode :: Map.Map Int String, - invisible_chars :: [String] - } - -appTransToUnicode :: Transliteration -> String -> String -appTransToUnicode trans = - concat . - map (\c -> maybe c (return . toEnum) $ - Map.lookup c (trans_to_unicode trans) - ) . - filter (flip notElem (invisible_chars trans)) . - unchar - -appTransFromUnicode :: Transliteration -> String -> String -appTransFromUnicode trans = - concat . - map (maybe "?" id . - flip Map.lookup (trans_from_unicode trans) - ) . - map fromEnum - - -mkTransliteration :: [String] -> [Int] -> Transliteration -mkTransliteration ts us = Trans (Map.fromList (tzip ts us)) (Map.fromList (uzip us ts)) [] - where - tzip ts us = [(t,u) | (t,u) <- zip ts us, t /= "-"] - uzip us ts = [(u,t) | (u,t) <- zip us ts, t /= "-"] - - -unchar :: String -> [String] -unchar s = case s of - c:d:cs - | isAlpha d -> [c] : unchar (d:cs) - | isSpace d -> [c]:[d]: unchar cs - | otherwise -> [c,d] : unchar cs - [_] -> [s] - _ -> [] - -transThai :: Transliteration -transThai = mkTransliteration allTrans allCodes where - allTrans = words $ - "- k k1 - k2 - k3 g c c1 c2 s' c3 y' d' t' " ++ - "t1 t2 t3 n' d t t4 t5 t6 n b p p1 f p2 f' " ++ - "p3 m y r - l - w s- s. s h l' O h' - " ++ - "a. a a: a+ i i: v v: u u: - - - - - - " ++ - "e e' o: a% a& L R S T1 T2 T3 T4 K - - - " ++ - "N0 N1 N2 N3 N4 N5 N6 N7 N8 N9 - - - - - - " - allCodes = [0x0e00 .. 0x0e7f] - -transDevanagari :: Transliteration -transDevanagari = (mkTransliteration allTrans allCodes){invisible_chars = ["a"]} where - allTrans = words $ - "M N - - " ++ - "a- A- i- I- u- U- R- - - - e- E- - - o- O- " ++ - "k K g G N: c C j J n: t. T. d. D. n. t " ++ - "T d D n - p P b B m y r - l - - v " ++ - "S s. s h - - r. - A i I u U R - - " ++ - "- e E o O " - allCodes = [0x0901 .. 0x094c] - diff --git a/src-3.0/GF/Text/UTF8.hs b/src-3.0/GF/Text/UTF8.hs deleted file mode 100644 index 5e9687684..000000000 --- a/src-3.0/GF/Text/UTF8.hs +++ /dev/null @@ -1,48 +0,0 @@ ----------------------------------------------------------------------- --- | --- Module : UTF8 --- Maintainer : AR --- Stability : (stable) --- Portability : (portable) --- --- > CVS $Date: 2005/04/21 16:23:42 $ --- > CVS $Author: bringert $ --- > CVS $Revision: 1.5 $ --- --- From the Char module supplied with HBC. --- code by Thomas Hallgren (Jul 10 1999) ------------------------------------------------------------------------------ - -module GF.Text.UTF8 (decodeUTF8, encodeUTF8) where - --- | Take a Unicode string and encode it as a string --- with the UTF8 method. -decodeUTF8 :: String -> String -decodeUTF8 "" = "" -decodeUTF8 (c:cs) | c < '\x80' = c : decodeUTF8 cs -decodeUTF8 (c:c':cs) | '\xc0' <= c && c <= '\xdf' && - '\x80' <= c' && c' <= '\xbf' = - toEnum ((fromEnum c `mod` 0x20) * 0x40 + fromEnum c' `mod` 0x40) : decodeUTF8 cs -decodeUTF8 (c:c':c'':cs) | '\xe0' <= c && c <= '\xef' && - '\x80' <= c' && c' <= '\xbf' && - '\x80' <= c'' && c'' <= '\xbf' = - toEnum ((fromEnum c `mod` 0x10 * 0x1000) + (fromEnum c' `mod` 0x40) * 0x40 + fromEnum c'' `mod` 0x40) : decodeUTF8 cs -decodeUTF8 s = s ---- AR workaround 22/6/2006 -----decodeUTF8 _ = error "UniChar.decodeUTF8: bad data" - -encodeUTF8 :: String -> String -encodeUTF8 "" = "" -encodeUTF8 (c:cs) = - if c > '\x0000' && c < '\x0080' then - c : encodeUTF8 cs - else if c < toEnum 0x0800 then - let i = fromEnum c - in toEnum (0xc0 + i `div` 0x40) : - toEnum (0x80 + i `mod` 0x40) : - encodeUTF8 cs - else - let i = fromEnum c - in toEnum (0xe0 + i `div` 0x1000) : - toEnum (0x80 + (i `mod` 0x1000) `div` 0x40) : - toEnum (0x80 + i `mod` 0x40) : - encodeUTF8 cs |
